Transceptor SFP+ BlueOptics BO35J15640D 10GBASE-ER Singlemode 1550nm 40KM LC-Duplex

The BlueOptics BO35J15640D SFP+ Transceiver is a 10GBASE-ER optical module for singlemode fiber networks. It transmits at 1550 nm and supports LC-duplex connectors for long-reach 10 Gigabit Ethernet links up to 40 km. The module is designed for installation in SFP+ ports on switches, routers and media converters and is specified to operate in ambient temperatures from 0°C to +70°C, providing a standard-compatible option for extending network backbone and aggregation links over singlemode fiber.

Advantages

This SFP+ transceiver offers long-distance singlemode performance with a 40 km reach at 1550 nm, enabling extended Ethernet links without repeaters. Its LC-duplex interface and SFP+ form factor make it compatible with a wide range of network devices that accept standard SFP+ modules. Rated for operation between 0°C and +70°C, the module is suitable for common indoor and sheltered outdoor installations where stable 10 Gigabit connectivity is required.

Suitable for (tasks / use cases)

When it may not be suitable

This module is optimized for singlemode fiber at 1550 nm and long distances; it is not suitable for multimode fiber installations or short-reach applications where SR (short reach) optics are required. It also requires SFP+ compatible host ports; it will not operate in devices that accept only fixed or proprietary fiber interfaces or non-SFP+ cages.

Key specifications

How to use

Install the BlueOptics BO35J15640D into a compatible SFP+ slot on your switch, router or media converter. Ensure the device recognizes the module and configure the port for 10 Gigabit operation if required by the host. Connect LC-duplex singlemode fiber patch cables to the transmit and receive ports, observing correct polarity. Verify link status on both ends and run standard network tests to confirm throughput and signal quality over the intended fiber span.

What to consider before purchase

Recommendations

For reliable long-distance performance, verify end-to-end fiber attenuation and use appropriate singlemode fiber (G.652 or similar). Clean LC connectors before mating and validate polarity. Monitor link quality after installation and ensure the host device firmware supports third-party SFP+ transceivers if vendor lock checks are present.